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arXiv · 2505.05068

Orbital-Selective Quasiparticle Depletion across the Density Wave Transition in Trilayer Nickelate La$_4$Ni$_3$O$_{10}$

Dong-Hyeon Gim·Chung Ha Park·Kee Hoon Kim
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Abstract

We investigate the evolution of polarized electronic Raman response in trilayer nickelate La$_4$Ni$_3$O$_{10}$, uncovering a systematic reduction of the incoherent electron continuum across the density wave transition in the $A_{1g}$ and $B_{1g}$ representations. Analysis based on the Fermi surface band curvatures points to quasiparticle coherence in momentum positions with dominant $d_{x^2-y^2}$ orbital character. Our findings establish the symmetry channels and the active role of $d_{x^2-y^2}$ orbitals involved in the density wave formation, offering important insight into the electronic and magnetic correlations in the nickelate.

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Dong-Hyeon Gim, Chung Ha Park, Kee Hoon Kim. 2025-05-08. Orbital-Selective Quasiparticle Depletion across the Density Wave Transition in Trilayer Nickelate La$_4$Ni$_3$O$_{10}$. https://doi.org/10.1103/1tp1-y73g

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